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Red Hat Security Advisory 2024-3543-03
Red Hat Security Advisory 2024-3543-03 - An update for python-idna is now available for Red Hat Enterprise Linux 8.8. Issues addressed include a denial of service vulnerability.
The following advisory data is extracted from:https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_3543.jsonRed Hat officially shut down their mailing list notifications October 10, 2023. Due to this, Packet Storm has recreated the below data as a reference point to raise awareness. It must be noted that due to an inability to easily track revision updates without crawling Red Hat's archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment.- Packet Storm Staff====================================================================Red Hat Security AdvisorySynopsis: Moderate: python-idna security and bug fix updateAdvisory ID: RHSA-2024:3543-03Product: Red Hat Enterprise LinuxAdvisory URL: https://access.redhat.com/errata/RHSA-2024:3543Issue date: 2024-06-03Revision: 03CVE Names: CVE-2024-3651====================================================================Summary: An update for python-idna is now available for Red Hat Enterprise Linux 8.8.Red Hat Product Security has rated this update as having a security impact ofModerate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.Description:Security Fix(es):* python-idna: potential DoS via resource consumption via specially craftedinputs to idna.encode() (CVE-2024-3651)Solution:https://access.redhat.com/articles/11258CVEs:CVE-2024-3651References:https://access.redhat.com/security/updates/classification/#moderatehttps://bugzilla.redhat.com/show_bug.cgi?id=2274779Related news
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### Impact A specially crafted argument to the `idna.encode()` function could consume significant resources. This may lead to a denial-of-service. ### Patches The function has been refined to reject such strings without the associated resource consumption in version 3.7. ### Workarounds Domain names cannot exceed 253 characters in length, if this length limit is enforced prior to passing the domain to the `idna.encode()` function it should no longer consume significant resources. This is triggered by arbitrarily large inputs that would not occur in normal usage, but may be passed to the library assuming there is no preliminary input validation by the higher-level application. ### References * https://huntr.com/bounties/93d78d07-d791-4b39-a845-cbfabc44aadb